| Volume 95, Issue 2 (partial) April - June 2023  | On the Cover Positronium, a bound system consisting of an electron and a positron, provides a platform for studying a wide variety of physical effects, ranging from tests of the equivalence principle to diagnostic applications in medicine. This Colloquium gives an overview of the current state of positronium physics, with an equal emphasis on fundamental and applied physics. From the article Colloquium: Positronium physics and biomedical applications
Steven D. Bass, Sebastiano Mariazzi, Pawel Moskal, and Ewa Stępień
Rev. Mod. Phys. 95, 021002 (2023) | | | | Advertisement  | The American Physical Society (APS), publisher of the Physical Review journals, is joining more than 20,000 individuals and organizations across 160 countries in a commitment to improve how researchers and their contributions to the scientific record are evaluated. APS is proud to mark the 10th anniversary of the Declaration on Research Assessment (DORA) by officially signing on to the international initiative. Learn more. | | | | | |
Advertisement | APS would like to learn about your publishing experiences with scientific journals, including PRL and other Physical Review journals. Please complete this survey to help APS better understand and meet your publishing needs. Take the survey. | | | | | Advertisement Discuss your research with Editors from the Physical Review Journals at DAMOP 2023 Got a question about your paper? Interested in learning more about the submission process? Want to become a referee? There are several opportunities to gain insight from editors from Physical Review Letters, Physical Review X, and Physical Review A at the 54th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics in Spokane, Washington.
Tutorial for Authors and Referees - Wednesday, June 7 from 3:30 p.m. – 4:30 p.m. in Room 201 ABC
Meet the APS Journal Editors - Wednesday, June 7 from 4:30 p.m. – 6:00 p.m. in the Riverside Lobby.
Plus, editors will be available for informal discussions at the Journals Booth, located in the Lobby area from 10 a.m. - 11 a.m., Monday, June 6 through Thursday, June 8, and again from 3:30 p.m. - 4:30 p.m. Tuesday, June 7 and Thursday, June 8. | | | | | | Not an APS member? Join today to start connecting with a community of more than 50,000 physicists. | | | | Warren E. Pickett Rev. Mod. Phys. 95, 021001 (2023) – Published 7 April 2023  | Superconductivity, discovered in 1911 and first theoretically understood in 1957, remains a fascinating phenomenon for reasons both fundamental and applied. Reliably calculating the critical temperature of a given material, and even more so predicting it, turned out to be a considerable challenge. This Colloquium explains how theoretical developments have led to increasingly reliable predictions that have culminated in the discovery of the hydride materials that display superconductivity under high pressure at temperatures just shy of room temperature. | | | | | | Steven D. Bass, Sebastiano Mariazzi, Pawel Moskal, and Ewa Stępień Rev. Mod. Phys. 95, 021002 (2023) – Published 10 May 2023  | Positronium, a bound system consisting of an electron and a positron, provides a platform for studying a wide variety of physical effects, ranging from tests of the equivalence principle to diagnostic applications in medicine. This Colloquium gives an overview of the current state of positronium physics, with an equal emphasis on fundamental and applied physics. | | | | | | Javier Junquera, Yousra Nahas, Sergei Prokhorenko, Laurent Bellaiche, Jorge Íñiguez, Darrell G. Schlom, Long-Qing Chen, Sayeef Salahuddin, David A. Muller, Lane W. Martin, and R. Ramesh Rev. Mod. Phys. 95, 025001 (2023) – Published 20 April 2023  | Topology provides a framework for an understanding of emergent phenomena in various fields such as the appearance of new results in the field of ferroelectrics. A historical introduction and a primer on the concepts of topology are followed by a discussion of experimental and theoretical methods that elucidate the exotic textures that appear in polar oxide nanostructures and superlattices. The complex interplay of several fundamental processes occurring on different energy scales leads to ground states that compete with one another and have large and/or novel responses with respect to external stimuli. | | | | | | Matteo Agostini, Giovanni Benato, Jason A. Detwiler, Javier Menéndez, and Francesco Vissani Rev. Mod. Phys. 95, 025002 (2023) – Published 30 May 2023  | Observation of neutrino oscillations implies that neutrinos have mass, but one does not know whether they are described by Dirac or Majorana mass terms. The discovery of a Majorana mass would provide a test of the global symmetries of the standard model, and would have implications for the origin of the number of baryons in the Universe. To achieve this one can search for neutrinoless double-beta decay, a rare nuclear decay where two new electrons are created with no antimatter. The next generation of experiments will explore large Majorana neutrino mass values, also testing alternative theoretical models. In this review, devoted to neutrinoless double-beta decay, the particle and nuclear physics aspects involved in predicting the decay rate and the experimental search methods are discussed. | | | | | | | |
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